Finding the Fourth Proportional to 12,404.31, 17,110.76 and 8,156.13

Step by Step Solution

1. Step 1: Write the proportion equation
   12,404.31 : 17,110.76 = 8,156.13 : x
2. Step 2: Convert to fraction form
   12,404.31/17,110.76 = 8,156.13/x
3. Step 3: Cross multiply
   12,404.31x = 17,110.76 × 8,156.13
4. Step 4: Simplify right side
   12,404.31x = 139,557,542.18
5. Step 5: Solve for x
   x = 139,557,542.18/12,404.31
6. Step 6: Final answer
   x = 11,250.73